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17 April, 16:12

Which is the intersection of the sets {1, 4, 8, 9} and {2, 4, 7, 9, 11}?

{4, 9}

{1, 2, 7, 8, 11}

null set

{1, 2, 4, 7, 8, 9, 11}

+4
Answers (1)
  1. 17 April, 17:04
    0
    7

    Here is a tip:

    so you have {1 2 4 7 8 9 11} Take your fingers on each end and cover each number till you get you the middle.
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